Patents by Inventor Naoto Moriya

Naoto Moriya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11221067
    Abstract: A control apparatus includes an input torque acquisition unit acquiring an input torque input to an automatic transmission input shaft, a clutch torque acquisition unit acquiring a clutch torque of a clutch operated to change a gear stage of the transmission, a torque determination unit determining a change of the input torque and the clutch torque from a first state in which one of the input torque and the clutch torque is greater than the other to a second state in which the other one is greater than the one, a gear ratio calculation unit calculating an intermediate gear ratio between pre-shift and post-shift gear ratios, and a torque calculation unit, when the torque determination unit determines a change of the input torque and the clutch torque from the first state to the second state, executing a process of calculating a target engine torque based on the intermediate gear ratio.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: January 11, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masato Shimoda, Naoto Moriya, Masakazu Owatari
  • Publication number: 20210270362
    Abstract: A control apparatus includes an input torque acquisition unit acquiring an input torque input to an automatic transmission input shaft, a clutch torque acquisition unit acquiring a clutch torque of a clutch operated to change a gear stage of the transmission, a torque determination unit determining a change of the input torque and the clutch torque from a first state in which one of the input torque and the clutch torque is greater than the other to a second state in which the other one is greater than the one, a gear ratio calculation unit calculating an intermediate gear ratio between pre-shift and post-shift gear ratios, and a torque calculation unit, when the torque determination unit determines a change of the input torque and the clutch torque from the first state to the second state, executing a process of calculating a target engine torque based on the intermediate gear ratio.
    Type: Application
    Filed: December 22, 2020
    Publication date: September 2, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masato SHIMODA, Naoto MORIYA, Masakazu OWATARI
  • Patent number: 9994224
    Abstract: A shift control system that reduces drop in driving force and shocks during execution of clutch-to-clutch upshifting is provided. The control system is configured to reduce a torque transmitting capacity of a first clutch at a predetermined rate while increasing a torque transmitting capacity of a second clutch with a reduction in the torque transmitting capacity of the first clutch during execution of the upshifting, to set a target speed of the engine to a level determined by adding a predetermined speed to a synchronous engine speed corresponding to a low speed stage, during a torque phase in which the torque transmitting capacity of the first clutch is being reduced and the torque transmitting capacity of the second clutch is being increased, and to execute a feedback control of an engine torque in such a manner as to maintain the engine speed to the target speed based on a difference between the target speed and an actual engine speed.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: June 12, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideo Watanabe, Naoto Moriya, Kuninori Kumagai, Junya Mizuno
  • Patent number: 9708992
    Abstract: A vehicle control system is provided to prevent an occurrence of an engine misfire which may be caused by an execution of ignition retard during lean-burn operation of an engine. The vehicle control system is configured to determine a starting point of an inertia phase when a shifting operation is demanded in the lean-burn mode. The vehicle control system is further configured to switch from the lean-burn mode to the stoichiometric mode before the starting point of the inertia phase, and to execute an ignition retard of the engine in the stoichiometric mode.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: July 18, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoto Moriya, Hideo Watanabe
  • Publication number: 20170144667
    Abstract: A shift control system that reduces drop in driving force and shocks during execution of clutch-to-clutch upshifting is provided. The control system is configured to reduce a torque transmitting capacity of a first clutch at a predetermined rate while increasing a torque transmitting capacity of a second clutch with a reduction in the torque transmitting capacity of the first clutch during execution of the upshifting, to set a target speed of the engine to a level determined by adding a predetermined speed to a synchronous engine speed corresponding to a low speed stage, during a torque phase in which the torque transmitting capacity of the first clutch is being reduced and the torque transmitting capacity of the second clutch is being increased, and to execute a feedback control of an engine torque in such a manner as to maintain the engine speed to the target speed based on a difference between the target speed and an actual engine speed.
    Type: Application
    Filed: October 28, 2016
    Publication date: May 25, 2017
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideo WATANABE, Naoto MORIYA, Kuninori KUMAGAI, Junya MIZUNO
  • Publication number: 20170067403
    Abstract: A vehicle control system is provided to prevent an occurrence of an engine misfire which may be caused by an execution of ignition retard during lean-burn operation of an engine. The vehicle control system is configured to determine a starting point of an inertia phase when a shifting operation is demanded in the lean-burn mode. The vehicle control system is further configured to switch from the lean-burn mode to the stoichiometric mode before the starting point of the inertia phase, and to execute an ignition retard of the engine in the stoichiometric mode.
    Type: Application
    Filed: September 6, 2016
    Publication date: March 9, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoto MORIYA, Hideo WATANABE
  • Patent number: 8983742
    Abstract: A control apparatus for controlling a vehicle having an automatic transmission arranged to transmit a vehicle drive force from a drive power source of the vehicle to drive wheels of the vehicle, such that a shift-down operation of the automatic transmission is performed as a result of a kick-down operation, the control apparatus includes a shift-down operation permitting/inhibiting portion configured to restrict the shift-down operation of the automatic transmission as a result of the kick-down operation, if a running speed of the vehicle upon detection of the kick-down operation is lower than a lower limit predetermined for a presently established gear positions or speed ratio of the automatic transmission.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: March 17, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takaaki Tokura, Hiroyuki Sawada, Naoto Moriya
  • Publication number: 20140214288
    Abstract: A control apparatus for controlling a vehicle having an automatic transmission arranged to transmit a vehicle drive force from a drive power source of the vehicle to drive wheels of the vehicle, such that a shift-down operation of the automatic transmission is performed as a result of a kick-down operation, the control apparatus includes a shift-down operation permitting/inhibiting portion configured to restrict the shift-down operation of the automatic transmission as a result of the kick-down operation, if a running speed of the vehicle upon detection of the kick-down operation is lower than a lower limit predetermined for a presently established gear positions or speed ratio of the automatic transmission.
    Type: Application
    Filed: October 11, 2012
    Publication date: July 31, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takaaki Tokura, Hiroyuki Sawada, Naoto Moriya
  • Patent number: 8306715
    Abstract: A controller has a command section, a control section, a time measurement section, and a command fixing section. The command section generates a command regarding the actuation state of a lock-up clutch in accordance with a condition value that is determined by the accelerator operating amount and the vehicle speed. The time measurement section starts to measure time when the accelerator operating amount drops to 0 with the current condition value maintained in a hysteresis range and the command section generates the acceleration slip executing command. When the accelerator operating amount is increased from 0, the time measurement section stops the measurement of time and resets the measured time to 0. The command fixing section fixes the command of the command section as an acceleration slip executing command in the period from when the time measurement by the time measurement section has started to when the measured time reaches a determination value.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: November 6, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Naoto Moriya, Yoshio Hasegawa
  • Patent number: 8241181
    Abstract: An ECU executes a program including the steps of: setting a first throttle opening degree (S100), setting a low gear torque LTE based on an engine torque map for low gear having the first throttle opening degree and an engine speed (rpm) as parameters (S200), setting a high gear torque HTE based on an engine torque map for high gear having the first throttle opening degree and the engine speed as parameters (S300), setting a target engine torque TTE by combining the low gear torque LTE and the high gear torque HTE by using a correction ratio KGR determined by a gear step (S400), and controlling the engine to produce a required torque set by using the target engine torque TTE (S700). In this way a torque can be obtained in accordance with the engine speed.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: August 14, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Naoto Moriya, Masaharu Tanaka, Masami Kondo, Hiroyasu Honda
  • Patent number: 8024096
    Abstract: When an automatic transmission is shifted from neutral to a forward gear, an ECU calculates the appropriate target gear. If the target gear speed is the second forward gear or higher, a target command pressure of a first engagement element is immediately increased to a maximum pressure regardless of an input torque, and a target command pressure of a second engagement element is gradually increased in accordance with the input torque.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: September 20, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Naoto Moriya, Yoshio Hasegawa, Nobufusa Kobayashi
  • Patent number: 7925407
    Abstract: The adjustment method includes an estimation step in which valve characteristics of the linear solenoid valves fitted to the hydraulic control circuit are measured, and estimated linear valve characteristics of the linear solenoid valves in isolation state are estimated based on the measured valve characteristics using predetermined correlations; and a correction value output step in which estimated linear piston-end pressures of the hydraulically-driven friction engagement elements immediately before the hydraulically-driven friction engagement elements are engaged are calculated based on the estimated linear valve characteristics, and the correction values that are applied to the control command values to adjust the drive currents supplied from the valve control unit to the linear solenoid valves are calculated based on differences between the estimated linear piston-end pressures and nominal piston-end pressures, and then output.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: April 12, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masami Kondo, Masaharu Tanaka, Takayuki Kawakami, Naoto Moriya
  • Patent number: 7908065
    Abstract: An ECU executes a program that includes the steps of i) calculating a sporty running counting SC based on a state of a vehicle according to an operation of a driver; ii) changing a condition for executing sporty running in which an upshift is inhibited when an accelerator is suddenly released and in which a downshift is promoted during sudden braking such that the condition is easier to satisfy and changing a condition for returning from sporty running so that it is more difficult to satisfy when the sporty running count SC is equal to or greater than a threshold value; and iii) changing the condition for executing sporty running so that it is more difficult to satisfy and changing the condition for returning from sporty running so that it is easier to satisfy when the sporty running count SC is not equal to or greater than the threshold value.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: March 15, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Seiji Kuwahara, Toshihiro Fukumasu, Masami Kondo, Hideki Kubonoya, Naoto Moriya, Masato Kaigawa
  • Publication number: 20100235062
    Abstract: A controller has a command section, a control section, a time measurement section, and a command fixing section. The command section generates a command regarding the actuation state of a lock-up clutch in accordance with a condition value that is determined by the accelerator operating amount and the vehicle speed. The time measurement section starts to measure time when the accelerator operating amount drops to 0 with the current condition value maintained in a hysteresis range and the command section generates the acceleration slip executing command. When the accelerator operating amount is increased from 0, the time measurement section stops the measurement of time and resets the measured time to 0. The command fixing section fixes the command of the command section as an acceleration slip executing command in the period from when the time measurement by the time measurement section has started to when the measured time reaches a determination value.
    Type: Application
    Filed: March 9, 2010
    Publication date: September 16, 2010
    Inventors: Naoto MORIYA, Yoshio Hasegawa
  • Patent number: 7678017
    Abstract: In a shift control device and a shift control method for an automatic transmission, when the shift range is switched from a non-travel range to a travel range, a squat control of temporarily forming a high-speed step that is smaller in speed change ratio than the first speed change step by engaging a first engagement element and a second engagement element, and then forming the first speed change step by releasing the second engagement element. In the case of standing-start of the vehicle in the high-speed step, the squat control is ended before the first speed change step is formed by releasing the second engagement element.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: March 16, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Naoto Moriya, Masaharu Tanaka, Yoshio Hasegawa, Tomohiro Asami
  • Publication number: 20090312924
    Abstract: When an automatic transmission is shifted from neutral to a a forward gear, an ECU calculates the appropriate target gear. If the target gear speed is the second forward gear or higher, a target command pressure of a first engagement element is immediately increased to a maximum pressure regardless of an input torque, and a target command pressure of a second engagement element is gradually increased in accordance with the input torque.
    Type: Application
    Filed: June 10, 2009
    Publication date: December 17, 2009
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoto Moriya, Yoshio Hasegawa, Nobufusa Kobayashi
  • Publication number: 20090181823
    Abstract: An ECU executes a program including the steps of: setting a first throttle opening degree (S100), setting a low gear torque LTE based on an engine torque map for low gear having the first throttle opening degree and an engine speed (rpm) as parameters (S200), setting a high gear torque HTE based on an engine torque map for high gear having the first throttle opening degree and the engine speed as parameters (S300), setting a target engine torque TTE by combining the low gear torque LTE and the high gear torque HTE by using a correction ratio KGR determined by a gear step (S400), and controlling the engine to produce a required torque set by using the target engine torque TTE (S700). In this way a torque can be obtained in accordance with the engine speed.
    Type: Application
    Filed: June 6, 2007
    Publication date: July 16, 2009
    Inventors: Naoto Moriya, Masaharu Tanaka, Masami Kondo, Hiroyasu Honda
  • Publication number: 20080287258
    Abstract: In a shift control device and a shift control method for an automatic transmission, when the shift range is switched from a non-travel range to a travel range, a squat control of temporarily forming a high-speed step that is smaller in speed change ratio than the first speed change step by engaging a first engagement element and a second engagement element, and then forming the first speed change step by releasing the second engagement element. In the case of standing-start of the vehicle in the high-speed step, the squat control is ended before the first speed change step is formed by releasing the second engagement element.
    Type: Application
    Filed: May 14, 2008
    Publication date: November 20, 2008
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoto Moriya, Masaharu Tanaka, Yoshio Hasegawa, Tomohiro Asami
  • Patent number: 7444261
    Abstract: An ECU executes a program that includes the steps of setting a vehicle speed to the minimum wheel speed among wheel speeds of four wheels of a vehicle; calculating a difference between the wheel speeds of right and left driven wheels; turning an abnormality flag on when a higher wheel speed is higher than a value obtained by multiplaying a lower wheel speed by ?; and determining that the vehicle is turning, and turning a turning flag on, when the abnormality flag is off, a predetermined time has not elapsed after the turning flag is turned on, and the difference between the wheel speeds is equal to or larger than a map value obtained using a map where a vehicle speed is used as a parameter.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: October 28, 2008
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ichiro Kitaori, Masami Kondo, Naoto Moriya, Masato Kaigawa
  • Publication number: 20080097674
    Abstract: An ECU executes a program that includes the steps of i) calculating a sporty running counting SC based on a state of a vehicle according to an operation of a driver; ii) changing a condition for executing sporty running in which an upshift is inhibited when an accelerator is suddenly released and in which a downshift is promoted during sudden braking such that the condition is easier to satisfy and changing a condition for returning from sporty running so that it is more difficult to satisfy when the sporty running count SC is equal to or greater than a threshold value; and iii) changing the condition for executing sporty running so that it is more difficult to satisfy and changing the condition for returning from sporty running so that it is easier to satisfy when the sporty running count SC is not equal to or greater than the threshold value.
    Type: Application
    Filed: October 18, 2007
    Publication date: April 24, 2008
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Seiji KUWAHARA, Toshihiro Fukumasu, Masami Kondo, Hideki Kubonoya, Naoto Moriya, Masato Kaigawa